I grade my shows on an A to F scale. This scale goes for the Audio and Video shows I have.
I just grade on the recorded quality, not how good I thought the show was.

A = Most shows will look and or sound very good for a bootleg -
but it is not the same as a commercially release recording.

B = Any show with this grade or higher will be very enjoyable to listen to or watch.

C = Shows have some audio or visual flaws. Some show lack in bass,
but the treble maybe very clean. Other shows sound might sound
muffled or bass heavy or the vox might be drowned out.

D = Shows were recorded at lower recording levels, increasing tape hiss.
This is for fans only.

F = Well this means pretty much I have this show to trade, you get the idea here.

I am currently trying to put all my video (VHS) shows onto DVD.
If the show you want is not listed as being on DVD ask me about it as I am always working on this.
Also sorry about all the pop up ad stuff on this site. It is a FREE host site so what can I say?
Thanks again for getting here and checking out my little space on the interweb.